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SEF812J
Component Description
NGEC0435
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the injector circuit, the coil in the injector is
energized. The energized coil pulls the ball valve back and allows
fuel to flow through the injector into the intake manifold. The
amount of fuel injected depends upon the injection pulse duration.
Pulse duration is the length of time the injector remains open. The
ECM controls the injection pulse duration based on engine fuel
needs.
ECM Terminals and Reference Value
NGEC0437
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
102
104
109
111
W/B
W/R
W/L
W/PU
Injector No. 1
Injector No. 3
Injector No. 2
Injector No. 4
[Engine is running]
쐌 Warm-up condition
쐌 Idle speed
BATTERY VOLTAGE
(11 - 14V)
SEF011W
[Engine is running]
쐌 Warm-up condition
쐌 Engine speed is 2,000 rpm
BATTERY VOLTAGE
(11 - 14V)
SEF012W
INJECTOR
KA24DE
Component Description
EC-567
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
GI
MA
EM
LC
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